Glass-grinding machine



July 12, 1927' J. A. MILLIKEN GLASS GRINDING MACHINE Filed NOV. 1. 1922 Sheets-Shout July 12, 1,927.

J. A. MILLIKEN GLAS S GRINDI NG MACHINE Filed Nov. 1, 1922 '7 Sheets-Sheet 2 INVENTUR.

51A TTORNEY.

July l2, 1927. n 1,635,491

1. A. MILLIKENl GLASS GRINDING MACHINE 'Filed Nov. 1,'1922 v "/"sheets-sheet :s

' L ATTORNEY.

Juli 12;"1927.

J. A. MILLIKEN GLASS GR'XNDINGJMACHINE l Filed Nov. l, 1922 7 Sheetsg-Sheet 4 *INYE* TOR. BY @Mb-Com ATTORNEY.

July 12,A 1927. jY

J. A. MlLLlKEN GLASS GRINDING MAllIlm Filed Nov. 1. 1922' 'l Sheets-Sheet 5 lull lllll l' July 12, 1927.

J. A. -MILLIKEN GLASS GRINDING MACHINE Filed Nov. 1,` 1922- 'T Sheets-Sheet 6 l ATTORNEY.

grinding discl `radiallv out of engagement with the J D U Pai'eifitedk July l2, 11927.

JOHN' A. MILLIKEN, or AMBLEP., EENNSYLVANIA, VAssifinoa 1 oF PHILADELBHIA, PENNSYLVANIA.

To `JOHN nf iviAasnnN;

eLAss-eaiiiniive MACHINE.-

Appiicaion inea Ngvembver 1, Aieaaf seriai ivo. 538,315.

, My inventionV relatesto glassgrinding maf/kines kand particularly to machines employed in cutting or grinding glassware.

One of the objectsot1 my -invention is thel provision, in a machine or the class referred to, of an improved arrangement or mechanism for automatically effecting .changes in the relative positions of the glassarticle being ground and the. vcut-ting tool, sov that various portions'or the glass article may -be automatically presented to the' vgrinding wheel in a predetermined sequence.

y Another object of my invention is to provide an .improved and simplified form of mechanism for treating articles, sucli vmechanismy being largely automatic in lits operation. l t i f My apparatus includes a rotatable carrier that `has glassware holders disposedfabout its periphery an l circumzterentially or a that is rotatably independent or the. carrier. Means are provided for intermittently imparting rotative movement ofthe holders about their individual axes as the carrier rotates, inwordervto'present spaced points of an articleibeing ground to the grinding disc. In order that thesur#v `Yraces between the said spaced Ypoints may not be marred, means are provided for moving the holder andthe article' carried thereby grinding disc, while the said individual v rotative movement isbeing imparted thereto. l

, ther means are provided for,automatically changing the ang ilarity of the holders during their movement 'about the Vaxis or thel grinding disc,so thatciits of diltea ent angularity may be made in the glass ar-l Vticle to enhance the .decorative veiftect. .The holder makes two complete revolutions about its axisduring one revolution yof the carrier, andthe change in the angular position of the'holder is effected after the holder has made Yone revolution abouty its ,individual axis.

' l vdo not limit my invention to Vthe toreeatures, but recite such `Vfeatures in reading of the specification'. c

One form in which in-yinvention lmay be employed is` shown inY the accompanying drawing wherein Fig. 1 is a view, partiallyin elevation `71.7 ofFig. 1.Y

apparatus of Fis- 10 with it .a grinding upon .the @per end thereof Th@ .member and partially embodying my invention. t

`Fig.' 2 is a 'sectional' viewy taken on the Fig. 3 is aplan viewofithe apparatus. y

Fig. 4f is a view talr'en on they-line insection, o'f Van apparatus respectively,V .taken on the. 6"-.6 and 'Fig' 8 is a view, partially-in side-elevation and partiallyin-section,v of thefap'paratus ot Fig. 10.-r A

Fig. 9 is a vi of Fig. 8.

ew taken on the line 10 is a view of one of the tumbler holders and the actuating mechanismfthere?. for, shownY .in Fig. 1, withiit'he tumblerremoved.

Fig. 11 is a View, iii endelevation7 of the.

apparatus of Fig.l 10.

' Fig. 12 is a view of the-apparatus.ot`

io; rooting from the ita.' y. of a `portion of the Fig. 13' afplan view Fig. 14 is a view, in perspective, showing glass tumbler after the cutting thereof has .been COmPltd- The apparatus comprises a trame work 15 provided with'bracing members 16 and 17 that support a bearing 18, (Fig. 2). A rod.

2O is disposed within the bear-ing; 18 Yand is` provided with a shoulderportion that rests upon a block 21 that is secured to the members 17.

Y A hOHQW Shaft 22 Siirroulls'th@ rod l240 and isprovided `with a beveled lgear 23 by means ofwhich it is rotated, A collar 22?. is secured tothe shaft 22 and engages thrust bearing 2 2bthat is'vsuppoited by a sleeve 19.

. A second y 25 that is driY-n by a' .worm.246'. i iota-table nse-iveidlitly @t the. shaft-1 `hollow shaft 24 surroundsvltlie i i 4sleevelt) and is directly supported by the,`

icc

pulley 27 the ShafZQ' revolves' Aand,carries disc29 that is supported 29'may be of carborundum or other suitable glass-grinding material. As the dise 29 rotates it will grindthe surfaces of articles that may be brought into engagement there with.

Y have anti-friction rollers 33 secured thereto.

rl`he rollers A33 cooperate with a sleeve member 34, that is provided on its underside with a series ofY cam lugs 36, as shown more clearly in Fig.l l. n

Then the hollow shaft 24 is rotated` the sleeve member 34 will move upwardly as tino rollers 33 are carried under the cam surfaces,

the sleeve 34 and the parts carried thereby being returned to their lower positions after each upward movement, by the action of gravity.

- The sleeve 34 carries a spider 35 that'supports a series of circumferentially dispo-Led rods 36 which are normally biased to their lower positions by lsprings 37 that are inte-rposed between nuts 38 carried by the rods and plates 39 that are secui'ed -to the ticles to be groundA are carried.

spider 35. Y

A carrier 4l. rests upon a bearing 3l and a sleeve 3l that is secured to the sleeve 19, rand is provided with an annular ring 42 which supports holders 43 upon which ary An annular member 44 is secured to the carrier 41 to limit upward movement of buffer members .45 `which arc supported by pins 46 that are Y secured to the spider 35, springs`47 being provided in order to'cushion the blows when vertical movement occurs between the spider and the carrier and to return the spider to its lowermost position.

Referring now more particularly to Fig. 8,

each holder comprises a frame 49 that supy portsa sleeve member 50 lwhich operates as rock shaft and is provided with anl up standing portion 51. A rack 52 is slidably supported in the frame 49 and carries a roller`53 at its lower end. At its upper end l the rack 52 has teeth that engage teeth 54 (Fig; ll) that are formed upon the outer end of the sleeve or rock shaft 50. A spring 55normally biases the rock shaft to` the position shown in FigsfO and ll, while a spring 56 biases the rack 52 downwardly, the spring 56 being connected to pins that are secured to the rack and theframe 49. If the plunger 52 be moved up'and down as hereinafter explained, the angular position ofthe arm 5l will be reversed, by reason of A shaft 57 is mounted within the shaft 50 v and is provided with an arm 58 atene end,

`and upon'its other end is providedV with a toothed collar 59 (Fig. l1). A rack 60 is slidably supported by the frame 49 and is normally biased downwardly by a tension spring 6l that is secured to pins lthat are carried by the rack and the Aframe 49. A roller 62 is mounted upon the lower ends of the rack 60. Astherack 60 rises and falls it will 'oscillate the shaft 57 and the arm 58, carried thereby. rEhe arm 58 carries a pawl 63 that is biased by aspring 63L (Fig. 9) into engagement with a ratchet wheel 64. As the arm 58 moves Ythrough an arc it is apparent that the pawl 63 imparts intermittent motion to theratchet wheel 64. The ratchet whe-el 64 is secured to a shaft comprising sleeve meinbers 65 and 65a that are rotatably supportedv in an extended portion 66 of theroclshaft 50. The shaft members 65-65n are rigidly joined by a sleeve member 67 and support a sleeve 68. Thesleeve member 67 is supported upon extended portion 66 by an antifriction-bearing 69. A screw 70 serves as a stop member to limit the downward movement of a tumbler.

A lever 64L that is proiiided with'a roller is held in yielding engagement with the wheel 64 to prevent movement thereof bacle wardly'(see Fig. 9). y

The sleeve member 67 is provided with radially extended .portions in which gripc ping members. 7l are slidably supported, the

gripping members 7lr being provided with blocks 72 of rubber. The gripping menibeis 7l are normally biased outwardly by means of a cone block V73Y as will be hereinafter described. vThe sleeve member 68 is provided with gripping members 74 which are biased outwardly by a cone block 75.

The shaft 65-65m and the parts supported thereby are `all rotatable within bearing block 66. A plunger 77 extends through the shaft 65-653 and is normally, biased downwardly by` a spring 78. A pin 79 extends across the upper end of the plunger 77,

through slots in the sleeve member 65"1 of lli) the shaft and through the cone block V (Figs. 8 and l0). A pair of springs 3l that have their upper and lower ends secured vrespectively to the pin 79 and to the ends of a pin 82 that is secured to the sleeve 67 serve toY bias the cone block 75 downwardly into engagement with rollers ,S3 that are carried by the gripping members 74, thus ,forcing such gripping members outwardly intor engagement with the interior wall of a glass article, to grip the same.

A pin 841extends through the conefblock 73 and the plunger 77, se that such cone block-73 moves with the plunger 77 and normally yforces the gripping member 7l outizo Wardly, through engagement with rollers that are carried by the grip'ping'inembers 71,

yby reason of the compression ot' the spring 78 that biases the plunger 77 downwardly. It will thus be seen thatthe grippin'gmembers 71 and 74 are held in advanced` 'positions until` the plunger 77;, is moved up-V wardly to permit the gripping members to be retracted. i

rEhe carrier 41 is of sufficient size to sup-V port 11 holders for tumblers (see Fig. 3), and is rotated, to move the group of Vtumblers circuinferentially Vof the grinding y Wheel, by a mechanism Which Will novv be described.

The shaft 24 carries al collar 87 (Figs. 1

and 2) that is provided on its upper side with cam lugs 88 and on its periphery with camlugs 89 (Fig. 4). As the pulley Wheel is driven and the shaft 24 rotates', the cam portions 89 Will be moved into engagement Withl aroller 90 that is supported inter- Y lmediate the ends of ran arm 91, the arm 91 v late.

The lbell crank vlever is connected.; ythrough a link 96, with a lever 97 (Fig. 7 which carries, at its upper end, a pavvl 98 that is normally biased into engagement With l teeth 99 that are formed upon the under side ot the ring .42 of the carrier 41,v Each time a cam lug S9 passes theroller 90A one-step of rotative movement will b e imparted to the carrier 41.

` The. cam lugs88 thatv are formed upon the up er side Otthecollar 87 engage the y inner end of a lever 100 (F 1) that is pivoted at 101 tothe frame work. The

outer end of Vthe lever 100 engages a lug on the link 102 (Figs. 1 and 6) that is nor- 99 on the underside of the ring'42. The camlugs 88 are so positioned that they will engage the vinner end of the lever 100 to move it upwardly and `x'vithdrau' the link 102l trom'engagement with the lugs 99 only When the cam lugs 89 arevoperating the lever 97 to move the carrier another step, thus holding the car ier against accidental movement.

r'he tumblers 104 that are shown in position upon the holders 43 (Figs. 1,2, 3, and 4), are given a slight rotative movement about their respective aires 77, at each'actuaf tion of the lever 97 bythe Cain lugs 89, thus presenting successive portions Vot the surface of the glass article to the grinding Wheel 29.

he tuinblers 104 and their supper'ti'ngA inein- V' bers are biased into' engagement ivith the grinding Wheelbyy a spring 105 that ispintei posedv between a portion ofthe trame Worllr 49 and a rack bar 107. The bar 107 engages la, bar 1508v that is secured to the rock shaft. 50 av `1 controls the longitudinal position of' theel-raft 50 in the rai'n'e'49. l

The rotative movement ot 'each tumbler aboiitits individual axis is etlected'v by the rise and tall of therack bar 60that oscillates the shaft 57 andimparts a' stepbystep movement to Vthe ratchet Wheel 64,` as'above explained. Theraclr bar 60dey moved up' Wardly against the' tension ot vthe spring 61a by reason of the upwardly extending lugs V109 that areorme'd on" a circumferential shoulder 110 that is: supported upon the top of the trame Worlt 15. of movement ot the rack bar 60' one step of rotative movement is imparted to the tumbler so that another portion of its surface may be presented ,to the grinding'u'heel 19. t is desirable to VWithdraw thev tumbler While the tumbler isbein'g rotatedabo'ut its axis, andthis Withdrawal is 'eiiected Yment of the sleeve shaft 24`rcau'ses thespi'der 35 to rise and fall.

l As such spiderrise's the rods 30 are pushed upwardiy,.thus causing (bell crank levers 112 (Figf 8) to rotatein aclock-Wise direction`-` about their pi'votsl, and retractiw rack ba 10T-against the tension o the springs 1,05, thereby'vithdrauf During" each cyci'e ing the tumblers 104 from engagement ivith the grinding wheel v19.Y By reasonroic the step each tumbler about its airis, vduring a portion o1c one .revolutionv of the carrier41k series of cuts v114 (Fig. 14) will be made in the' tuniblers, andthe surfacelbetvveen earch cute yWill notV be inarred,"o\ving: to thev With-V drawal of the tumbler tro'mtherwheel'at s each rotative step. i maliy biased upwardly by a tension Aspring 103 into locking engagement with the teethA In order to presentthe tumbler to the cutter at a different angle and have "cuts 115 -byY-ste'p movement ot y of the frame Work 15', forfsubs'tantiallyonehalt of its circumference. `The iledge' 116v has inclined'sur'faces 117 at its ends.

As the roller 5,3 ot a plungerj52 passes up lone 1n.- clined surface 117 the arni 51 is 'throrvnaoverrocking the sleeve shaft l50 that carries the against` the tension of' the spring 55,; thus.

tumbler holders, and 'reversing the angular position of that t'uiiibierwvitli respect to' the Q Wheel, alsA shown in Fig. V3. ,VJ lien the roller 5B passes o the other end of the ledge 116 the spring 55 will returntlie tumblerholderV toits former position. Y y

V'Allhe camping-s 109 prot dan cient nuin'b'er that a complete rotation ofthe tumbler about its aXis 77 takes place during the movement of the carrier through nearly 180 degrees, so that thetumbler during one-half of a complete revolution of the carrier will be presented throughout its circumference, atrone angle, to the cutting disc 19, and during the other half of such revolution by the carrier 41 will be presented, -throughout its circumference, at another angle.

Each tumbler as it isbrought by the carrier to its starting point is released from its holder by means of a cam member 120 (Figs.

2 and 3), which is formed upon the outer endof an arm 122, and which is positioned to be `engaged by theV plungerl 77, moving such plunger upward and releasing the gripping members 74 and 71.

, In order torwithdraw each tumbler from the Yengagement with the grinding wheel at g Vthe completion of the grinding operation l .provide a plunger 118, that carries a roller Y I 119 atits lower end and at its upper end abuts against the bell crank lever 112 (Figs.

8 and 10). rlheroller 119 is engaged by a cam lug 121 ig. 2) just previous to the engagement of the plunger l77 and the cam member `120 above referred to. The upward movement of the plunger 118 (Fig. 8) rocks the bell crank lever 112 against the tension of the spring and withdraws the tumbler holder 43, thus holding` the tumbler away from the grinding wheel 19 and permitting its withdrawal from the holder.

The annular member has the cam lugs 109 omitted therefrom for a sort distance, as shown at 123 (Fig. 3) Vwhich represents an` I. idling surface that the holders pass over while the tumblers are being placed and removed, at Vthe beginning and the end, re? spectively, of the cycle of operation.

It will be understood that the operation ofthe various parts of the mechanism above described automatically takesplace in a predetermined sequence, owing to 'the relative Vpositions of the cam surfaces carriedupon the annular 'member 110v at the top of the frame work 15 and of the cam lugs located on the collars 34 and 87.,

Various changes in detail and general arrangement may beinade without departing from the spirit and scope of theV invention as defined in the accompanying claims.

I claim: f Y

Y LA glass grinding'machine 'comprising a grinder, a plurality of holders for sup Yporting the articles to be ground, a carrier forsupporting the holders and for moving them with respect to the grinder, and means for varying the angular position of the l'iolders with respectto the grinder as the carrier is moved, preliminaryT to another operation by said grinder.

2..A glass grinding machine comprising l a grinder, a plurality of holders for suprarticle to be ground, and means automatically operated in predetermined sequencev for intermittently moving the article into and out of engagement with the grinder, means for rotatably adjusting the articleV at the conclusion of each grinding operation, and means for varying the angular position of the article with respect to the grinder at the conclusion of a' plurality of. grinding operations.

4l. A Dlass grinding machine comprising a rotatably supported grinder Jhe axis of which is normally maintained in a -nonshiftable position, means for supporting the article to be ground, driving mechanism for the supporting means, and means controlled by .said driving mechanism for intermittently moving the article into and out of en- .gagement .with the grinder, means for rotatably adjusting the article at the conclusion of each grinding operation, and means for varying the angular position of the article with respect to the grinder at the conclusion of a plurality of grinding operations. Y

5. A glass grinding machine comprising .a rotatably mounted holder for an article to be ground,'means normallymaintained inra non-shiftable position for grinding said article, means for moving the holder and the article carried thereby away from the grinder at the conclusion of a single grindingoperation, and means for imparting rotative' movement to the holder subsequent to the movement thereof away from the grinding means.

6. A glass grinding machine comprising a grinder, a carrier, a plurality of holders for articles to be ground disposed circumferentially of the carrier and of the grinder, mechanism for rotating the carriery and means controlled by the said mechanism for reciprocating the holders and the articles carried thereby radially of the carrier and' Y for intermittently rotating each holder about its longitudinalaxis.

7. A glass grinding machine vcomprising a grinder, a carrier, a plurality of holders for articles to be ground disposedV circumferentially of the carrier and of the grinder, mechanism for rotating the carrier and means controlled' by the said mechanism for Amoving the holders radially of the carrier and for intermittently rotating each holder rneans coiitrolledfbythe said inechariisinffor Y moving` the@ holders to inoperative position With respect *tothe grinder, VAtor intermittenty Va. rotatable grHidingWheel, a plurality. of.

`ly `rotating each l'iol'derabout its longitu- *dinalaxisyandfor varying tlie'angular poY sition of the holder. j Y f Aglas's grindingimachine comprisingfa grindeiga carrier, a plurality' of holders for articles 'to be ground disposed circumferenti'ally `oithe carrier and of the grinder,

' mechanism for .rotating theacarrier vand means controlled by theY said mechanism foi'. ymoving the holders-radially of the; carrier, "for intermittently rotatii'ig each. holder about its longitudinal airis', -and torlvarying'the angelar?positionotthe holder,- the said movements Yof ythe holder all occurring jin a predetermined sequence.

' circumferentiallyof the Wheeh means VJr'or rotating theho'ldci's as"v unit, and means for holdingt-he said: articles `against the Vsaid -Wheel in: one-angular positionldiiring a poi l tion .of their circumierentialmovement 'andf for changing 'such angular posi-tion-dii-ring another portion' oi such movement. l1.r n glass Ygrinding machine comprising 'i a rotatable grinding Wheel; a plurality. ot

holders Ytor articles ltol be 'gronndgdisposed circumferentially of the Wheel,` means!v for dividual anisthereof.y

"12. A. glassrgrinding machine comprising v-arotatable grinding, Wheel', a plurality oft holders for articles to bej ground, disposed circumferentially rof the Wheel, ineansf'or -and' vmeans-for rotatingfsaid Work-holders;

'."jrotating the holders Vas admit, means for `for rotating each holderabout an individual l be'ng imparted thereto.

' :fa rot-atable grindingy Wheel, 'a plurality ofy holders disposed circnmfercnti-a j`liolding .the said articles against the" said Wheel inoneanO'ular positionduring a po r tion oit theirv circumferential movement and 'orf changii'ig ysuch angular'positionV during anotherportion of such 'movement, means 'axis-thereof, .and means'forlretracting the holders While the Asald'rotative 13.A A glass'grind'ng'machine comprising Wheel for engaging; articles ,to beground,

-dividual axes,; neans.forabodilyfshifting said ss grifdiiig inachin e, c'omprising a.rotatable grinding Wheel, fa plurality of 4holderstor articles to'` be ground, disposed holders fr l'aiticlestol be' groind ,circuinferentially of the wheeh means for i `iotatni g the holders i asa unit, means for sii tently/'varying fthe an holders during v.thei menti andimea'ns-ic-or lporting articles tolse gripporting the lic-.lele s -ivith Yrespect-[sto the..

mo-vement is means for rotatingfthe holdersabout the. aXis ofthe Wheeh'meansforrotating said holders .a plurality ,of timesjabout v@their in-l holdersbetween-gsa-id last namedyvcycles of .rotary moi/ementand-means vfor. automatically releasing `sai l, v` rticles-as the holderby whicheachl is carrie'dj'completes its Vcycle of movement.`4 l l .f

. 14..` Ai glassgrinding'inacliinecomprising -ih'ol'dersfi'on articles to be ground; disposed circumerentiallypot thelvvheel, means rotatingithe vholders asia unit, means for mpar-tinov "in'te'rmittent .rotative'- movement d0 duringfitsfindividual rotatiie.-inove1nent. -A

15. A Vglass grinding machinecomprising f i -a vrotatable. grindingWvheel,` a plurality of-v holders for articles -t'o be groui'id disposer ciifcumterentiahyof the" Wheel, imeansiior. 'l rotating the yholders I a unit, means .'forisii multaiieoiisly'yrotatinL7 'about individual. axes and,meanstonsi` Lthe -respectivefholders'- inultaiieou sly 2 r c ai actin the holders Aduring "f thesaid [individual rota-tive .movements 16. I A glass grinding machine comprising arotatable grinding;Wheehza. lplurality of inultaneously.rotating the respective li ol d ersf f` n about Aindividual faires, vmeans *for intermitgularjpositions of the initaryj rotative move- 'n tra'cting `the .holders Vinterim"ttent .changes in' positions. f i ``lfl .A"-glassgrinding machine comprising .Y azfo'rinder, a plnralfit, ''holdei for'gsupi oundj a arr-ier for,A rindfor in vin-gftlieni 'nder, andy meanset during V.the said w tective 1.upon movement of; said carrier or- 110; .varying the ifelfrtive v`zingarilar cutting ."posif nderand said;holders;VIV 18 .grindingniiachinecomprising I a grinde ',a: rotatable'carrier-a plurality of Workholderscarried by; said carrie @nd 115 disposed circumferentiajlly ofjtlie grinder,y

about` .their "spective airesy and gior" f tanec'usly li lparting frelative':

'.Worlcliolders .andA grinder in fa, dire al;.'ofl -.theiplanein 4which grinder," a carrier for. supporting vsaid Work Imovement' to said grinder and Work holders.

p20. Glass Woking apparatus comprising a carrier,a plurality otwork holders` sup- ;portedzthereby, va grinder `past `which the carrier rmoves .said Work holders, and means l`for changing the 'positionsof said -Worl vholders onthe carrier,inpredetermiiied rei- .latrion to the movement of said carrier.

i 21. Grlass Working apparatus comprising va carrier,ra rotatable Work holderthereon,

'l a cutter for operatingon an articleto be Y supported by said holder, and means Voperated by movement of said carrier after each revolution ot said Work holder'tor changing therelativeangularityi of the axes of "said Work holder and cutter to present different areas of the article to said cutter. K

-' 22. A'V glass grindingniachine comprisingL l a carrier, a `Work holder mountediupon said carrier, a grinder for operating on Work carried; by said holder, iiie'ans'for bringing Y saidrholder and grinder-` intoV operativerelation to cuti a' design .circumterentially of the "Work, and means cont-rolled bythe move'- "ment 'of said carrier; for changiiigsaid oper-A ative relation toeiiect-the cutting of another y. design circumierentiallyo .said Work.

` V23. Af glassgri-nding machine comprising said operative relation toeecttheciitting oi. another design on said Work. i'

24. A glass grinding machine comprising a: carrier, a-,ivorkh'oldermounted upon said Y carrier, agrinder for operating on Work carvried-bys'aid holder, ineaiisfor bringing said liolder'fandgrinder into operative relation to" cut'adesign circumferentially ofthe Work,v

means controlled'byvtlie movement of said carrier; for changing said operative relation *tofellect the cuttingqof another design circumierentially of. said Work, and VmeansV for movingsaid grinder andholder out of operp ative relation While said change .is taking place.

, 25. A glass grinding Vmachine comprising jira `rotatable carrier, a -Worlrfrhol'der mounted Y yupon said carrier, a grinder for .operating 0n VWork carried lby saidl holder, means .operlative during a portion-of therotative 'move-1, Y mentf bythe vcarrier to bringsaid holder andl grinder into operative relation to eut ,one de'- --sign circumferentially' of `rthe Work, and;

means Voperative yduring another portion of the rotative movenient'by `said carrier to `move said holder' and vgrinder to anotherV operative relation to cutjanother design cir: cumferentially of the Work.-

26. A glass grinding macliinecomprising y 'configurations on the Work.

a rotatable carrier, a Work holder mounted upon said carrier, a grinder for operating on Work Acarried by vsaid holder, means controlled by movement of the said carrier .dur-

ing Ya portion of the rotativemovement by the carrier to bring said holder and grinder into operative vrelation to cut one designe circumiterentially of the Work, and .means controlled by movement of the carrier dur- .ing another' portion oit' the rotative movement by said carrier to move said holder and grinder to another operativer relation to cut another design,circumferentially of theA Work. .Y n

21A glass grinding machine comprising a carrier movable through recurring cycles,

a Work holder mounted upon the carrier, a

'grinder lfor operatingy on Work y.carried by carrier, means controlled by said mechanism `said holder, mechanisni'for rotating saidy for clianginglthe relative operative positionsV c of the said grinder and holder and for rotate ,ing said holder twice during one cycle of movement ot said' carriei",in order to grindA a'V plurality oi circumferentially disposed 28. Glass grinding apparatus comprising a carrier, a Work holder` mounted for moveinent with the carrier and for rotative move-l VVment about its individual axis, a grinder for Y operating on vWorl carried by said holder,

and means operative p in predetermined relation tothe movement of said carrier to change the operative :positions v.of 'said' grinder and Work holder after each revolu- 1 tion of said holder,rto effect the cuttingloiI a'r Q plurality of designs 'circumferentially ot the Work; I f Y 29.v Glass grinding apparatus vcomprising a'carrier, 'al Work holder.V mounted for movement With the carrier and for rotative movement about its individual aXis, a grinder vfor operating on Work Vcarried by saidholdei', and means operative aiterveach revolutionv V`ot the Work holder tocliange the operative positions of said grinder and work holder,

4to'ei'ect the cutting ot a plurality of designs circumferentially of the Work.

ment With the carrierA and for rotative ,move-Vl 30;` Glass f grinding f' apparatus comprising. a carrier, a -vvorlr holder mounted Yfor moveiin" ment about its individual axis, a grinder for operating on'. vvork carried r by Vsaid' holder, and means automatically operative'v upon the completion'of each rotation of said Work holder to change theV relative angular positions of'said grindery and Work holder,f

n 3l.` Glass 'grindingapparatuscomprising a carrier, means for imparting step-by-step rotativeamovement. to said carrier, a Work holder mounted upon'said carrier, a grinden --foroperating upon an articleto be carried by said Work holder, means operative .during each step of said rotative movement by then carrier to Withdraw the Work holder from holder. e y f d 32. Glass grinding apparatus comprising av carrier, means :tor imparting step-by-step rotative ymovement to said carrier, a worioperative relation r with respect to said grinder, and means for imparting rotative movement to said work holder about its individual axis upon withdrawal of said work holder mountedy upon said carrier, a grinder for operating upon an article to be carried by said work holder, means operative during each step of said rotative movement by the carrier to withdraw the .work holder from operative relation with respect` to saidl grinder, means for imparting rotative movement to said workl holder about vitsA individual axis upon withdrawal 4ot said worky holder, and means operative at a predetermined point during rotativev movement of said carrier to change the relative angular nositions ot said Grinder and work holder.

` 33. Glass grinding apparatuscomprising a rotatable carrier, means for imparting in-` I' termittent movement to said carrier, a work holder mountedr upon s aid carrier, a grinder for operating on work to ybe carried'byv said holder, .means operative inpredetermined relation. to said intermittent movement tor impart-ing rotative movement to said'holder, and means operating in prey determined relation to* said intermittent movement for bodily shiftingv said work holder to present a plurality of circuinierenf tially disposed areas ot 'the work to said grinder. Y' Y v 34. Glass grinding apparatus comprising a grinding tool, a rotatable work holder,

means Vfor moving said tool and rotatable work holder into operative relation to eil-ect the grinding oi a design circumferentiallyot an article carried by Vsaid work holder, ande means operative in predetermined 'relation to the rotativel movements ot said work holder to shift the relative vpositionsy otsaid work-holder and said grinder and thereby effect the grinding of .another cumferentially of said article.

35. Grlassv grinding` apparatusl comprising arotatable carrier` means for imparting a step-by-step movement tosaid carrier.A means controlled by movement ct said carri for step-by-step movement to said carrier, means controlled by movement of said carrier for locking the same between the periods of said step-by-step lmovement, Va work holder y design cir-k 'carried by said holdeinf mountedy upon said carrier, a grinder Afor olierating on an article carried by said work holder vandrvmeans operable in predetermined relation tothe movement ofA said carrier for effecting movement ot said work holder into and outof operative relation "to said grinder and `lor imparting rotative movement to said work holder. i y

Grinding apparatus comprising a grinder, a travelingcarrier7 a work holder mounted on'said carrier means tor moving said Vcarrier step-b-y-step, inposition to coopf erate wit-lisaid grindeiyandA means effective upon movement of said said'fcarrier through a plurality of steps 'lor varying `th'e'relativev angular cutting positions of-saidygrinderand work holder.

38. Grinding apparatus `comprising a grinding tool,l a carrier movable step-by-step,

a. work holder mounted upon said carrier in times duringv'one cutting operation, and means eiiective upon movement ot saidgcalrrier .tl'i'rough a plurality otstepsjto change if position tocooperatewith said -tool `and rol .tatable about its own aXis a plurality of' the "angular position ot said liolderwithrej spect to said carrierbetore'the completion of.' a cutting operation. f

39. Grinding apparatus comprising a grinder,a.v plurality of work," holders rotat- `able about then-'individual axes, a` carrieretor lmoving' said holders with respect to said grinder, and meansv effective upon movement of said carrier., forv indexing` said holdersv l about their respective axes and relativeto'.

said grinder.

40. Grinding apparatus comprising a carrier`,ineans for-intermittently rotating said carrier, av worlrholder mounted uponsaid` i carrier, a grinding tool, and meansjtor etm :tecting movement otsaid holder with re-v spect to said vtool, forv each intermittent '-Vmovement otsaid carrier. f

41'. Grinding apparatus comprising' a car-1` rier,`lmeaiis for intermittently rotating said carrier,` a `work holder mountedupon said in predetermined relation to the intermit; tent movements of said carrieriior completing a series of cuttingoperations on an cle supported-by saidholder.V ,y

42. Grinding .y apparatus comprising a rmovable carrier, a *workv holder mounted uponsaid carrier and' rotatable about its own axis, a grinding tool adaptedfto co-opv eratewitli said worliholder, and means articarrier, a grinding tool, and meansoperativo operative after' predetermined movement-oi.

said carrier to clia'nge'tlie angle of said axis with'respectto` the axis'of said O'rindingtool and to etl'ect further grinding of ln'testimony whereof I have, hereunto affixed niysignature this' 30th day of October,

Y JOHN AMILLIKEN,

an article'` i4 

